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Finding the Fourth Proportional to 209,099.68, 288,599.68 and 124,200.32

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Solution

The fourth proportional to 209,099.68, 288,599.68 and 124,200.32 is: 171,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,099.68 : 288,599.68 = 124,200.32 : x
  2. Step 2: Convert to fraction form
    209,099.68/288,599.68 = 124,200.32/x
  3. Step 3: Cross multiply
    209,099.68x = 288,599.68 × 124,200.32
  4. Step 4: Simplify right side
    209,099.68x = 35,844,172,607.90
  5. Step 5: Solve for x
    x = 35,844,172,607.90/209,099.68
  6. Step 6: Final answer
    x = 171,421.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.